Need help please, thank you.

The answer is 7.2 how would you put this as money

Pentagon abcde is dilated according to the rule do,3(x,y) to create the image pentagon a'b'c'd'e', which is shown on the graph. what are the coordinates of point a of the pre-image? a) (-1, 1)b) (-1, 2)c) (-9, 6)d) (-9, 18)

Acircle has a radius of 17. approximately what is the area of the circle